18220213001 has 8 divisors (see below), whose sum is σ = 19208555520. Its totient is φ = 17234808912.

The previous prime is 18220212973. The next prime is 18220213013. The reversal of 18220213001 is 10031202281.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18220213001 - 2²² = 18216018697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18220213031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 721865 + ... + 746678.

It is an arithmetic number, because the mean of its divisors is an integer number (2401069440).

Almost surely, 2^18220213001 is an apocalyptic number.

It is an amenable number.

18220213001 is a deficient number, since it is larger than the sum of its proper divisors (988342519).

18220213001 is a wasteful number, since it uses less digits than its factorization.

18220213001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1469215.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 18220213001 its reverse (10031202281), we get a palindrome (28251415282).

The spelling of 18220213001 in words is "eighteen billion, two hundred twenty million, two hundred thirteen thousand, one".